Electric heater



Sept. 10, 1929. H. D. JERMON ELECTRIC HEATER Filed June 1, 1928 2 Sheets-Sheet 1 Sept. 10, 1929. H. D. JERMON 1,727,983

ELECTRIC HEATER Filed June 1, 1928 2 snets sneez E INVENTOR: WOLQ CJL tB,

TTORNE Patented Sept. 10, 1929.

UNITED STATES PATENT OFFICE.

HORACE D. JERMON, OF GLOUCESTER, NEW JERSEY, ASSIGNOR TO CRESCENT APPLIF ANCE CORPORATION, OF GLOUCESTER, NEVJ JERSEY, A

JERSEY.

CORPORATION OF NEW ELECTRIC HEATER.

Application filed June 1, 1928. Serial No. 282,082.

This invention relates to improvements in electric heaters for heating the rooms of buildings and for other purposes.

An object of the invention isrto provide a novel, inexpensive and efficient means for supporting an electrical resistance element or bar within or forwardly of a suitable reflector and for permitting electrical current to be supplied thereto.

A further object of the invention is to so construct and arrange the parts that a dome shaped reflector may be employed and that the resistance element may be supported by arms extending forwardly and diverging outwardly from a single insulating block which is secured to the central portion of the reflector.

WVith the foregoing and related objects in view the invention consists of the elements and the combinations of them hereinafter described and claimed.

In the accompanying drawings, illustrating the invention,

Figure 1 is a side view of an electric heater embodying my invention.

Figure 2 is a front view thereof.

Figure 3 is a horizontal section through the heater, on line 33 of Fig. 2.

Figure 4: is a vertical section on line 4-4 of Fig. 2.

Referring to the drawings, 2 designates a reflector and 5 a supporting base or stand therefor.

The reflector comprises dome shaped front and rear metal plates 6 and 7, respectively.

The plates 6 and 7 are provided with outwardly extending, annular flanges 8 and 9, respectively, and the flange 8 is bent or formed around the flange 9, as shown in Fig. 3, to secure the surrounding edge portions of the plates 6 and 7 together and hold the central portions thereof spaced from each other.

The outer or rear plate 7 is provided with openings 10 suitably spaced around the forward portion thereof for the circulation of air through the space between the plates 6 and 7 to keep them cool.

The lower rearward portion of the re- Hector 2 is provided with a bracket 11 which is secured to the rear plate 7 and pivotally connected to the upper portion of the base 5 by means of a bolt 12 which is provided with a suit-able thumb nut 13 by means of which the reflector may be clamped in different positions of adjustment on the base 5.

The upper portion of the reflector 2 has a fixed post 14 thereon carrying a ring or handle 15 which is pivoted thereto for the purpose of carrying the heater from place to place.

Located centrally within the reflector 2 is a block 16 which is formed of suitable electrical insulating material. The block 16 comprises a horizontally extending front portion 17 and a central portion 18 which extends rearwardly from the front portion 17, as clearly shown in Fig 3.

The front portion 17 0f the block 16 is located within and fitted to an opening 19 in the front reflector plate 6 and the front portion of the blockextends forwardly of the front plate and it is provided with laterally or outwardly extending parts which engage the forward surface of the front plate 6 around the opening 19 therein.

The central portion 18 of the block 16 ex tends to and engages the forward surface of the rear plate 7 and the block 16 is secured in place by screw 20 which extends through the plate 7 and is screwed into the block 16. The head of the screw 20 engages the rearward surface of the rear plate 7 and draws the block 16 against the forward surfaces of the plates 6 and 7 and thereby holds the block firmly in place within the central portion of the reflector with the horizontally extending front portion 17 of the block spaced forwardly from the rear plate 7.

The front wall of the block 16 is pro vided with a horizontally extending groove 21 for the laterally spaced rearward end portions of fiat arms 22 which are formed of spring metal and which extend forwardly and diverge outwardly from the respective sides of the block 16, as shown in Fig. 3.

Directly back of the rearward end portions of the arms 22 are the terminal plates 23 of flexible electrical conducting wires 24. The plates 23 are fitted against the rearward surfaces of the respective sides of the forward portion 17 of the block 16, and the arms 22 and plates 23 are secured to the block 16 by suitable bolts 25 which extend through them and clamp them together. The bolts 25 are formed of metal and serve as a common means for electrically connecting the wires 24 and arms 22 and for securing them to the block 16.

The wires 24 are covered with insulation and they extend out through an'opening 26 in the rear plate 7 above the block 16, and the wires 24 are protected from the plate 7 by a ring of insulating material 27 which is set in the opening 26, as shown in Fig. 4.

The engagement of the block 16 with the wall of the opening 19 in the plate 6 prevents the accidental turning of the block about the axis of the screw 20, and the engagement of the upper and lower edges of the adjacent ends of the arms 22 with the adjacent walls of the groove 21 prevents the arms 22 from accidentally turning about the axes of the bolts 25.

The arms 22 diverge from the block 16 in spaced relation to the front reflector plate 6 and their free forward ends are bent to extend parallel to each other in opposing relative positions and they are provided with re-enforcing plates 28 which are riveted thereto, as shown in Fig. 3.

The opposing walls of the re-enforced,

' parallel ends of the arms 22 have sockets 29 formed therein for the reception of the ends of a bar or rod 30 which may be formed of any suitable electrical resistance material which will be heated to a high degree when electric current is supplied thereto. Normally, when the bar 30 is removed from the arms 22, the socketed free ends ofthe arms are somewhat closer together than as shown in the drawings so that, after they have been sprung apart to permit the insertion of the ends of the bar 30 into the sockets 29, they will exert inward pressure against the ends of the bar and hold it in place clamped between and in electrical contact with the ends of the arms 22.

It will now be understood that when the wires 24- are connected to a source of electric current the bar 30 will be heated in the manner common to electric heaters of the class to which my invention relates.

borundum. Such bars are now in open sale upon the market under the name Globar sold by Globar Corporation of Niagara Falls, New York, but other suitable resistance bars can be used without departing from my invention.

I claim:

1. In an electric heater, a reflector comprising front and rear plates having their edge portions connected and having their central portions spaced from each other, a block of electrical insulating material secured to the central portion of the rear plate and extending through the central portion of the front plate to a position forwardly of the forward surface thereof, spaced arms extending forwardly and diverging outwardly from said block and being formed of electrical conducting material, an electrical resistance bar connecting the forward end portions of the arms, flexble electrical conductors extending from said block, and bolts extending through said block and electrically connecting said arms and said conductors and securing them to the block.

2. In an electric heater, a reflector comprising front and rear plates having their edge portions connected and having their central portions spaced from each other, a block of electrical insulating material secured to the central portion of the rear plate and extending through the central portion of the front plate to a position forwardly of the forward surface thereof, spaced arms extending forwardly and diverging outwardly from said block and being formed of electrical conducting material, an electrical resistance bar connecting the forward end portions of the arms, flexible electrical conductors extending from said block, and bolts extending through said block and electrically connecting said arms and said conductors and securing them to the block, said arms and said block having co-engaging parts preventing the turning of the arms about the axes of the bolts.

3. In an electric heater, a reflector comprising front and rear plates having their edge portions connected and having their central portions spaced from each other, a block of electrical insulating material extending from the central portion of the rear plate to and through the central portion of the front plate to a position forwardly of the forward surface thereof, spaced arms ex tending forwardly and diverging outwardly from said block and being formed of electrical conducting material, an electrical resistance bar connecting the forward end portions of the arms, flexible electrical conductors extending from said block and electrically connected to said arms, and a centrally arranged screw extending through the rear plate of the reflector and into said block and connecting them together, said front plate and said block having co-engaging parts preventing the turning of the block about the axis of the screw.

4:. In an electric heater, a reflector comprising front and rear plates having their edge portions connected and having their central portions spaced from each other, the front plate having a central opening therein, a block of electrical insulating material having a horizontally extending front portion within the opening in the front plate and spaced from the rear plate, said block having a central portion extending rearwardly from the front portion thereof to the rear plate, means to secure the central portion of the block to the rear plate, spaced arm's extending forwardly and diverging outwardly from the respective sides of the front portion of the block and being formed of electrical conducting material, an electrical resistance bar connecting the forward end portions of the arms, flexible electrical conductors extending from the back of the respective sides of the front portion of the block, and bolts extending through the respective sides of the front portion of the block and electrically connecting said arms and said conductors and securing them to the block.

5. In an electric heater, a reflector comprising front and rear plates having their edge portions connected and having their central portions spaced from each other, the front plate having a central opening therein, a block of electrical insulating material having a horizontally extending front portion within the opening in the front plate and provided with a horizontally extending groove in the front wall thereof, said bloc: having a central portion extending rearwardly from the front portion thereof to the rear plate, means to secure the central portion of the block to the rear plate, arms having adjacent spaced end portions seated in said groove, said arms extending forwardly and diverging outwardly from the respective sides of the front portion of the block and being formed of electrical conducting material, flexible electrical conductors extending from the back of the respective sides of the front portion of the block, and bolts extending through the respective sides of the front portion of the block and electrically connecting said arms and said conductors and securing them to the block.

6. In an electric heater, a reflector comprising front and rear plates having their edge portions connected and having their central portions spaced from each other, the front plate having a central opening therein, a block of electrical insulating material engaging the central portion of the forward surface of the rear plate and extending therefrom to and through the opening in the front plate and having laterally extending parts engaging the forward surface of the front plate, a screw engaged with the rear plate and screwed into and holding said block HORACE D. JERMON. 

